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According to the news of Three Gorges Group, the first acceptance wheel of Baihetan Hydropower Station in 2021, the No.
11 unit runner, successfully passed the static balance test acceptance
on February 1.
The indicators of the runner of Unit 11 on the right bank meet the design requirements and meet the quality standards
.
Up to now, a total of 11 sets of runners of Baihetan Hydropower Station have been manufactured, all of which have achieved high-quality products
.
The runner is the "heart" of the hydroelectric generator set, the key component that determines the stability and energy conversion of the unit, and the core component
with the most difficult and manufacturing problems in the research and development of the unit.
The runners of the eight units on the right bank of Baihetan Hydropower Station all adopt long and short blade design, which is developed, designed and produced on site by Three Gorges Group and Harbin Electric Group, each runner is composed of upper crown, lower ring, 15 long blades and 15 short blades, the maximum outer diameter of the runner is 8870 mm, the height is 3795 mm, and the weight is 338.
2 tons
.
The design of long and short blades can effectively improve the hydraulic efficiency of the unit, improve the output of the unit, reduce the dissipation of turbulent flow energy in the flow channel, and improve the overall performance
of the turbine.
Static balance test is an important part of runner processing, the purpose is to detect the mass eccentricity of the runner, and determine whether it is necessary to increase the counterweight through the measured data, so as to reduce the mass eccentricity
of the runner in the manufacturing process.
The mass eccentricity will cause an additional centrifugal force to occur in the operation of the unit, if the force is large, it may lead to the hydraulic imbalance of the turbine runner, affecting the safe and stable operation
of the unit.
According to the national standard, the residual unbalance torque measured by the static balance test is less than 198.
8Kg·m even if it is qualified, and if it is less than 75Kg·m, it can reach the excellent standard
proposed by Three Gorges Group.
The unbalanced torque measured in the static balance test of the runner of Unit 11 on the right bank of Baihetan Hydropower Station that passed the acceptance was 9.
03Kg? m, better than 75 kg? m Boutique Standard
.
According to the news of Three Gorges Group, the first acceptance wheel of Baihetan Hydropower Station in 2021, the No.
11 unit runner, successfully passed the static balance test acceptance
on February 1.
The indicators of the runner of Unit 11 on the right bank meet the design requirements and meet the quality standards
.
Up to now, a total of 11 sets of runners of Baihetan Hydropower Station have been manufactured, all of which have achieved high-quality products
.
The runner is the "heart" of the hydroelectric generator set, the key component that determines the stability and energy conversion of the unit, and the core component
with the most difficult and manufacturing problems in the research and development of the unit.
The runners of the eight units on the right bank of Baihetan Hydropower Station all adopt long and short blade design, which is developed, designed and produced on site by Three Gorges Group and Harbin Electric Group, each runner is composed of upper crown, lower ring, 15 long blades and 15 short blades, the maximum outer diameter of the runner is 8870 mm, the height is 3795 mm, and the weight is 338.
2 tons
.
The design of long and short blades can effectively improve the hydraulic efficiency of the unit, improve the output of the unit, reduce the dissipation of turbulent flow energy in the flow channel, and improve the overall performance
of the turbine.
Static balance test is an important part of runner processing, the purpose is to detect the mass eccentricity of the runner, and determine whether it is necessary to increase the counterweight through the measured data, so as to reduce the mass eccentricity
of the runner in the manufacturing process.
The mass eccentricity will cause an additional centrifugal force to occur in the operation of the unit, if the force is large, it may lead to the hydraulic imbalance of the turbine runner, affecting the safe and stable operation
of the unit.
According to the national standard, the residual unbalance torque measured by the static balance test is less than 198.
8Kg·m even if it is qualified, and if it is less than 75Kg·m, it can reach the excellent standard
proposed by Three Gorges Group.
The unbalanced torque measured in the static balance test of the runner of Unit 11 on the right bank of Baihetan Hydropower Station that passed the acceptance was 9.
03Kg? m, better than 75 kg? m Boutique Standard
.
